JPH0633995Y2 - Traveling toys - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a traveling toy equipped with a DC motor, and more specifically, a technique effective when applied to a traveling toy equipped with a brushed DC motor. It is about.

[Prior Art] For example, a running toy used in a racing game machine is equipped with a brushed DC motor as a simple motor.

And in a racing game using this running toy, you can compete on the orbiting time by running on a circular track on which power supply rails are laid, and on the straight track on which the power supply rails are also laid. There is a competition.

The speed adjustment in such a traveling toy is generally performed by voltage control by adjusting the grip of the throttle.

[Problems to be Solved by the Invention] However, there is a problem that it is difficult to adapt to both the circular orbit and the linear trajectory only by the voltage control by adjusting the throttle grip. This is because the speed of the DC motor is extremely reduced when a load is applied, and the speed is extremely reduced in a curve having a large load.

Therefore, it has been desired to develop a traveling toy in which the characteristics of the motor can be changed to a high-torque type or a high-rotation type and the traveling toy can travel according to the traveling track.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a traveling toy equipped with a DC motor that allows the user to enjoy a game while adjusting the motor characteristics to the optimum ones according to the type of track.

[Means for Achieving the Problems] In order to solve the above problems, in the present invention, a means for changing the contact position between a brush and a commutator piece with respect to a stator in a traveling toy equipped with a DC motor with a brush. Is provided. For example, the brush holder that holds the brush can be rotated with respect to the stator.

That is, according to the present invention, the motor characteristics can be changed between the high torque type and the high rotation type by changing the contact position between the brush and the commutator piece with respect to the direction of the magnetic field of the stator. Based on this, the above problem is solved.

[Operation] According to the above configuration of the present invention, when competing for the time required for orbit in a low-speed orbit with many curves, the contact position between the brush and the commutator piece with respect to the direction of the magnetic field of the stator is set to the normal position (motor efficiency The position of the brush and commutator element against the direction of the magnetic field of the stator when competing for the time required on a high-speed orbit with few curves It is possible to make the motor a high rotation type by setting the contact position with the positive advance position from the normal position.

Therefore, the game can be enjoyed while adjusting the motor characteristics to the optimum ones according to the type of the track.

In addition, you can enjoy the subtleties of brush axis adjustment.

[Embodiment] Hereinafter, a traveling toy according to an embodiment of the present invention will be described with reference to the drawings.

In the traveling toy according to the embodiment of the present invention shown in FIG. 1 and FIG. 2, the direct current motor 3 that receives the direct current from the power supply rail 2 laid on the traveling track 1 and rotates the
Wheels 4a of a traveling body 4 equipped with the motor 3 are driven to travel on the track 1.

More specifically explaining the process, the direct current supplied from the power feeding rail 2 to the motor 3 is transmitted to the brush 6 connected to the terminal plate 4c via the terminal plate 4c and comes into contact with the brush 6. It flows in the winding of the rotor 9 placed in the magnetic field of the stator 8 via the three commutator pieces 7, and rotationally drives the rotor 9 according to Fleming's left-hand rule. Then, the driving force of the rotor 9 is further transmitted to the rear wheel 4a via the gear mechanism 4b, and the wheel 4a is rotationally driven to drive the traveling body 4.

Here, in the motor 3 of the traveling toy according to the present embodiment, one end of the brush holder 5 that supports the pair of brushes 6
5a is a brush holder support case fixed to the traveling body 4.
The recesses 10a of 10 are fitted so as to be slidable around the rotation axis of the rotor 9.

Further, an adjustment let 11 is formed on the side surface of the brush holder 5, and when the brush holder 5 is fitted into the brush holder support case 10 and slides around the rotation axis of the rotor 9, the adjustment let 11 is provided. 11 is adapted to mesh with a protrusion 12 formed at the end of the brush holder support case 10. As a result, the brush holder 5 is positioned at a predetermined position of the brush holder supporting case 10.

That is, a plurality of teeth are formed on the adjusting let 11, and the brush holder 5 is attached to the brush holder supporting case 10 by changing the meshing position between the adjusting let 11 and the protrusion 12. Reversely, stepwise between the position where the motor efficiency is maximum shown in (b) (normal position) and the high torque position shown in FIG. 3 (a) (minus side advance position with respect to the normal position). , Is adjusted stepwise between the position shown in FIG. 3 (b) where the motor efficiency is maximized and the high rotation position shown in FIG. 3 (c) (the positive side advance angle position relative to the normal position). It can be fixed.

Here, the position where the motor efficiency is maximum shown in FIG. 3B is a position where the combination of the curve and the straight line is suitable for an average medium-speed orbit. In the above-described embodiment, at this brush position, the line connecting the upper and lower vertices of the brush holder 5 coincides with the vertical axis, and the position becomes the normal position.

Further, as the maximum high torque position shown in FIG.
When the number of commutator pieces 7 is 3, a position (minus side advancing position) in which the contact between the brush and the commutator piece is delayed by 10 degrees from the normal position N shown in FIG. 3B is selected.

On the other hand, as the maximum high rotation position shown in FIG. 3 (c), when the number of commutator pieces 7 is three, the contact between the brush and the commutator piece is more than the normal position N shown in FIG. 3 (b). A position that advances 10 degrees in the rotation direction of the rotor 9 (a positive side advance position) is selected.

The normal position and the third position shown in FIG.
Depending on the type of the track, between the maximum high torque position shown in FIG. (A) and the normal position shown in FIG. 3 (b) and the maximum high rotation position shown in FIG. 3 (c). By rotating the brush holder 5, the motor characteristics can be changed stepwise.

The running toy according to this embodiment configured as described above can obtain the following effects.

That is, in the medium-speed orbit where the combination of the curve and the straight line is average,
The position of the brush holder 5 is set to the position shown in FIG. 3 (b), the motor 3 is adjusted to the medium torque medium rotation type, and
In a low-speed orbit with many curves, the position of the brush holder 5 is set to the minus side advance position with respect to the normal position N as shown in FIG. 3 (c), and the NS switching timing of the rotor 9 is delayed, The motor 3 is adjusted to a high torque type, and on the other hand, in a high-speed orbit with few curves, the position of the brush holder 5 is set to the plus side advance position with respect to the normal position N as shown in FIG. Child 9
Since the switching timing of NS can be advanced and the motor 3 can be adjusted to a high rotation type, it is possible to enjoy the game while adjusting the characteristics of the motor 3 to the optimum one according to the type of track.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made within the scope of the invention described in the scope of claims for utility model registration.

For example, in the above embodiment, the contact position between the brush 6 and the commutator piece 7 is changed stepwise, but the contact position between the brush 6 and the commutator piece 7 can be changed steplessly. Of course good things.

Further, in the above embodiment, the contact position between the brush 6 and the commutator piece 7 is changed by rotating the brush holder, but it is also possible to rotate the stator side and the brush holder. Needless to say, only the brush 6 may be moved without rotating the brush 5. In short, it suffices if the contact position between the brush 6 and the commutator piece 7 can be changed.

Further, in the above embodiment, the case where the number of commutator pieces 7 is three has been described, but the number of commutator pieces 7 may be four or more.

[Effect of the Invention] As described above, in the present invention, the traveling toy including the DC motor with the brush is provided with the means for changing the contact position between the brush and the commutator piece with respect to the stator. When competing for the time required for orbit in a low-speed orbit with many curves, set the contact position between the brush and the commutator piece with respect to the direction of the magnetic field of the stator to the minus side advance position with respect to the normal position and set the motor When using a high torque type and competing for orbiting time in a high-speed orbit with few curves, the contact position between the brush and the commutator piece with respect to the magnetic field direction of the stator is set to the positive side advance position with respect to the normal position. Then, the motor can be made a high rotation type.

Therefore, according to the traveling toy of the present invention, a traveling toy provided with a DC motor that can enjoy the competition while adjusting the motor characteristic to the optimum one according to the type of the competition is provided.

[Brief description of drawings]

FIG. 1 is a plan view showing the structure of a traveling toy according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a motor of the traveling toy shown in FIG. 1, and FIG. FIG. 3B is a view showing a contact state of the brush and the commutator in the position when viewed from the rear of the traveling toy, and FIG. 3B is a contact state of the brush and the commutator in the normal position when viewed from the rear of the traveling toy. FIG. 3 (c) is a diagram showing a contact state between the brush and the commutator at the positive side advance angle position as seen from the rear of the traveling toy. 1 ... Running track, 2 ... Feed rail, 3 ... DC motor, 4 ... Running body, 5 ... Brush holder, 6 ... Brush, 7 ... Commutator piece, 8 ... Stator, 9 ... … Rotor, 10
…… Brush holder support case, 11 …… Adjustment let,
12 ... Protrusion.

Claims (2)

[Scope of utility model registration request] 1. A traveling toy equipped with a brushed DC motor, wherein the traveling toy is equipped with means for changing the contact position between the brush and the commutator piece with respect to the stator. 2. The traveling toy according to claim 1, wherein a brush holder for holding the brush is rotatable with respect to the stator.